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# Alg 1 3.6 Reciprocals and Division

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### Alg 1 3.6 Reciprocals and Division

1. 1. Algebra 1 3.6 Reciprocals and Division https://www.youtube.com/watch?v=-Te57fkE6Gc
2. 2. Did you know that: By stating the objectives for the lesson, retention increases by 24%!
3. 3. Review:
4. 4. Talk with the people on your table about: 2. Consider the fraction . What does the denominator tell you? Give a real-life example of this fraction. 4 5 3. What happens when you multiply by its reciprocal, ? Why? 4 5 4 5 1. What operation is being represented in ? How do you know? 4 5
5. 5. Step 1: convert decimal to fraction. Step 2: Find the reciprocal. How do you find the reciprocal of 3.14?
6. 6. Find the reciprocal of this decimal:
7. 7. Find the reciprocal of this decimal:
8. 8. 1) 45.65 2) 632.6 3) 2.239 4) 0.10394
9. 9. Reciprocal Properties: Property of Reciprocals: a 1 a = 1 a1 a = 1 Reciprocal of the Opposite: a 1 -a = - 1 Reciprocal of a Product: = 1 ab 1 a 1 b
10. 10. Division = Multiplying by a reciprocal Examples:
11. 11. Simplifying Simple Expressions with Reciprocals: 1 -7 1 4 1 4 4y 1 3 -6ab -
12. 12. Simplifying Complicated Expressions with Reciprocals: 1 3 (42x - 3y)
13. 13. Practice Problems in Algebra 1 Textbook